which was a belief of Copernicus's model of the solar system?
the planets move in perfect circles
all planets orbit the sun at the same speed
the outer planets move in epicycles
Earth is fixed to a crystalline sphere
The belief of Copernicus's model of the solar system was that the planets move in perfect circles.
One of the beliefs of Copernicus's model of the solar system was that Earth is fixed to a crystalline sphere.
Copernicus's model of the solar system introduced the heliocentric theory, which means that the sun is at the center and the planets orbit around it. One of Copernicus's beliefs was that the planets move in perfect circles. However, it is important to note that this belief turned out to be inaccurate. Later observations and the development of more accurate models revealed that the planets actually move in elliptical (oval-shaped) orbits.
If you're curious about Copernicus's model and want to verify this information, you can refer to his book "De revolutionibus orbium coelestium" (On the Revolutions of the Celestial Spheres) where he presented his ideas and beliefs about the structure of the solar system.